i know that the cell providers sell their customers' information, sprint does at least. when my father purchased me my first cell phone through sprint, he had it under his name. so the bills came with his name and address. i have since moved to another house (i changed my address with sprint but never the name) and for a year now i have had a phone with verizon and to this day I STILL get junk mail from all kinds of companies at MY house with my dad's name and my address on it. if they sell names and addresses, i don't see why they wouldn't sell the numbers too. oh...and i still have the same phone number that i had with sprint. i can't believe i can't even get away from telemarketing calls on my cell. i don't think it will make any use to contact the cell company, they're the ones who gave the info out to begin with........